Accession Number : AD0681734

Title :   ANGULAR DEPENDENCE OF THE ENERGY SPECTRA OF SECONDARY IONS AT VARIOUS ANGLES OF EMISSION,

Corporate Author : FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO

Personal Author(s) : Arifov,U. A. ; Aliev,A. A. ; Ayukhanov,A. Kh.

Report Date : 13 JUN 1968

Pagination or Media Count : 18

Abstract : Earlier articles by the authors described the use by them of an electrostatic analyzer to study the angular dependence of the energy spectra of secondary ions during the bombardment of metals by positive ions. On the basis of the resulting data the authors concluded that during the bombardment of metals by ions in an energy range of 1-3 kev scattering is explained by paired collisions, single and multiple. The earlier articles described the results of the energy analysis of the secondary ions emitted at a certain angle 50 deg in relation to an angle of incidence of 10-80 deg. As a result of the design of the instrument it was possible, by changing the target position vis-a-vis the analyzer, to study the dependence of the energy spectra of the secondary ions on the angle of incidence at various emission angle values. The present article gives the results of these investigations, in particular, oscillograms showing the energy distribution and the angular dependence of the energy spectra at various angles of emission for secondary ions when a Mo target heated to 1800 K is bombarded by positive potassium or cesium ions with energy EO = 1000 ev. The authors discuss some of the results and conclude that they can be explained from the viewpoint of paired collisions of the bombarding ions with a system of free atoms.

Descriptors :   (*ION BOMBARDMENT, *SECONDARY EMISSION), INTERACTIONS, MOLYBDENUM, POTASSIUM, CESIUM, IONS, PARTICLE ACCELERATOR TARGETS, SCATTERING, SECONDARY EMISSION, USSR

Subject Categories : Nuclear Physics & Elementary Particle Physics

Distribution Statement : APPROVED FOR PUBLIC RELEASE